fluorite

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fluorite

a fluorine-bearing rock mineral. Called also fluorspar, calcium fluoride.
References in periodicals archive ?
Rare Derbyshire Blue John pieces, including an 18th century ormolumounted urn linked to city industrialist Matthew Boulton, are to be sold by Fellows Auctioneers in the Jewellery Quarter next month.
Lono + Quidgybopper vs Blue John, Sun Feb 8, PS5 The Winter Hill Transmission + George .
CITY LEFT BLACK & BLUE John Mulroy celebrates Athlone Town's first equaliser in the clash with Cork last night
He was hiking through Blue John Canyon in Utak when his right hand was pinned and trapped against a canyon wall.
Activities this year included raft-building and canoeing on a vast reservoir, rock-climbing, abseiling and bouldering on The Roaches, descending into Blue John caves and scrambling up to Peveril Castle.
Film -- 127 Hours at 7pm on OSN Movies HD This is the true story of Aron Ralston, a thrill-seeking adventurist who, on a spontaneous hike to Blue John Canyon in Utah became trapped in a canyon after a boulder became dislodged and crushed his arm against the wall.
Concord- based Amos Wayne Richards, 64, who fell 10 feet into the Little Blue John Canyon during his hiking adventure, is now recovering from leg injury at home, the Telegraph reports.
As he attempts to traverse Blue John Canyon, the rocks give way, sending him plummeting to the bottom, his arm trapped by a heavy boulder.
Except for the scene where they let go of the walls of Blue John Canyon to drop into a hidden blue lagoon.
Slumdog Millionaire star Freida Pinto wore an electric blue John Galliano gown with Martin Katz jewellery while her pint-sized co-stars wore custom-made outfits by Brooks Brothers.
Home of the unique mineral Blue John stone, including the largest piece ever found.